#!/bin/bash

# 停止并禁用 DHCP 相关服务
systemctl stop dhcpd.service isc-dhcp-server 2>/dev/null
systemctl disable dhcpd.service isc-dhcp-server 2>/dev/null

# 卸载所有 DHCP 相关包（兼容 dnf/yum/apt）
if command -v dnf >/dev/null 2>&1; then
    dnf remove -y $(rpm -qa | grep '^dhcp') 2>/dev/null
elif command -v yum >/dev/null 2>&1; then
    yum remove -y $(rpm -qa | grep '^dhcp') 2>/dev/null
elif command -v apt-get >/dev/null 2>&1; then
    apt-get purge -y isc-dhcp-server dhcp3-server 2>/dev/null
fi

# 验证
if rpm -qa 2>/dev/null | grep -q '^dhcp' || dpkg -l 2>/dev/null | grep -qE 'isc-dhcp-server|dhcp3-server'; then
    echo "[-] DHCP 服务器包仍然存在"
    exit 1
else
    echo "[+] DHCP 服务器相关包已卸载"
    exit 0
fi